Which of the following important supreme court cases established a precedent of legal, racial segregation in public places and was closely associated with the phrase "separate but equal"?

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

In 150-200 words, name three advancements made by the egyptians and tell how they impacted the culture.

Under whose presidential administration was the missouri compromise passed?